Spanner wrench for turning flywheels



1951 L. s. STITES ET AL SPANNEB WRENCH FOR TURNING FLYWHEELS Filed De 23, 1947 INVENTORS STITL'S 0ND 6777153 i9 3 Fig 4 .Z'l'

1 LOVL J'Oll/V BY 7/ ,5

Patented Dec. 18, 1951 WRENCH FOR TURNING FLYWHEELS SPANNER Loyal S. Stites and John L. Stites, Boise, Idaho 7 Application December 23, 1947, Serial No. 793,362

g 2 Claims. 1

This invention relates to a tool for use by mechanics in turning a flywheel or the like by hand to a desired position during construction, repair and replacement work, such as in the fitting of bearings, installing pistons, checking bearing wear, or in any operations requiring turning of the crankshaft, conveniently accomplished by turning the flywheel. l

An object of the invention is to provide a tool of this kind adjustable to various sizes of flywheels and which may be moved to various positions on a given flywheel once the tool has been adjusted thereto.

Another object is to provide a tool of this character which eliminates danger of injury to the hands of the mechanic doing work of the above mentioned kind.

Another object is the provision of such a tool adapted for efllcient, low-cost manufacture.

These and other objects are attained by the means described herein and illustrated in the accompanying drawings, in which:

Figure l is an elevational view of the tool of this invention applied to the outer rim and adjacent rear portion of a flywheel, the latter shown in part only,

Figure 2 is a similar view, showing the opposite side of the tool and with the grip member thereof reversed for engaging the lateral rim portion of the flywheel at the front thereof,

Figure 3 is a side or edge view of the tool as it is seen in use in Figure 1,

Figure 4 is a cross-section of the same,

Figure 5 is a view similar to Figure 4, showing the tool adjusted for use as in Figure 2.

With detailed reference to the drawing, the tool comprises a handle I that may be rounded as at 2, at the lower end, for ease in manipulation. The upper end of the handle is developed to provide a head 3 extending transversely on both sides of the handle. The head is further formed along the top thereof to provide an arcuate flange 4, adapted to contact the outer rim of a flywheel. At each end of this flange, laterally thereof, a lug 5 and 6, respectively, is formed. The upper end portion of the handle 2 has a central opening I therein, and the handle, in this portion, is preferably formed with narrow opposed. edge flanges 8 and 9.

A grip member ID cooperates with handle described and consists essentially of a rigid strip flttingagainst the handle 2 between the edge flanges 8 and 9. The grip member is formed with a longitudinally extending slot II and a bolt l9 extends through opening I in the handle and 2 through said slot and is adapted to receive suit able pressure washers l2 and I3 and a nut M for releasably locking the handle and grip member together.

At one end grip member [0 is formed with a round terminus l5 formed with an opening 18 and projecting beyond the head 3 of the handle. The opening [8 is adapted to be positioned around the head 16 of one of the pressure plate fastening bolts extending laterally of one side of a flywheel fl. An offset 20 in the grip member, just below this apertured part, facilitates this positioning. The grip member ID and handle 2 are shifted longitudinally relative to one another for placing the arcuate flange 4 of head 3 in contact against the adjacent outer rim of the flywheel flange [8. At this time, lugs 5 and 6 rest against the adjacent lateral portions of the flywheel flange. Thereafter the nut I4 is tightened and the tool is ready for use for turning the wheel in either direction.

It is possible to apply the tool to the opposite side of the flywheel, that is, the front thereof, as in Figure 2. For this purpose, the grip member I0 opposite the apertured part I5 is formed with a hooked end 2| having a top section 22 adapted to be disposed across the said rim flange of the flywheel. Thereafter, with nut l4 loosened, the two parts of the tool are shifted relative to one another until the arcuate flange 4 rests against the outer edges of the ring gear teeth 23 of the wheel and the lugs 5 and 6 disposed against the opposite sides of the teeth. Then the nut 14 is tightened and the tool may be used.

It is to be noted that the function of the tool is not essentially to grip the wheel in a plane transversely of the wheel but rather in the plane of the face of the wheel against which the tool is applied. The turning of the wheel by the tool requires only that the latter be secure against slippage or tilting in the general plane of the wheel. Therefore the frictional engagement of the tool need not be great and the tool, once adjusted to a given wheel, may be shifted to different parts of the same side of the wheel without adjusting the tool.

Modifications of the present invention are intended to be comprised within its scope.

What is claimed is: 1. A mechanics tool for turning a flywhe comprising a handle, a head disposed in end to end relation with respect to one end of said handle and fixedly secured thereto, said head having its free end turned over to provide a transversely extending arcuate flange for conformably contacting the outer rim of said flywheel, a lug projecting from each end of said arcuate flange and secured laterally thereof for engagement with the adjacent lateral portions of J said flywheel, a gripping member arranged in abutting relation with respect to one face of said head and mounted for sliding movement longitudinally fthereoff' said grippirig infembr being;

provided with a longitudinal slot adjacent one" 10 a' hookadapted to be disposed'across the inner end thereof, means on the other end of said gripping member for detachably supporting said head in cooperative relation with respect to said flywheel, and hand actuable means extending 3' through said slot and said head and secured. to 15 member.

the latter for fixedly positidning"themeans carried by the other end of saidigxippingzmember;

2. A mechanics tool for turning a flywheel comprising a handle, a head disposed in end to" end relation with respect to one end of said 20 w'heer; a gripning member-:ar r'anged m abutting 2 relation-*withrespct m me outer fa'ce of saidhead and -mounted for sliding 'fnfovemeriifilongfl tlidi'n'ally thereof. saidgfipping member being rim of said flywheel, and hand actuable means extending through said slot and said head and securecl 'io the latter for fixedly positioning the means carried by the other end of said gripping LOYAL S. STITES. JOHN L. STITES.

REFERENCES CITED The followingreferences are of record in .the file of .this patent? UNITED STATESiPATENTS.

Number i Name- Date? 164,504 WoodWorth et"a1.- June 15,- 1875 336,609 Weaver Feb; '23,-' 1886 424,471 Eb erh'ardtL Apr 'l,'l890 466,912 Schofleld Jan; -l2,"- 189 2 

